@inproceedings{69f16873c00d43b08a92530d6ff3b98d,
title = "PPDCP-ABE: Privacy-preserving decentralized ciphertext-policy attribute-based encryption",
abstract = "Cipher-policy attribute-based encryption (CP-ABE) is a more efficient and flexible encryption system as the encryptor can control the access structure when encrypting a message. In this paper, we propose a privacy-preserving decentralized CP-ABE (PPDCP-ABE) scheme where the central authority is not required, namely each authority can work independently without the cooperation to initialize the system. Meanwhile, a user can obtain secret keys from multiple authorities without releasing his global identifier (GID) and attributes to them. This is contrasted to the previous privacy-preserving multi-authority ABE (PPMA-ABE) schemes where a user can obtain secret keys from multiple authorities with them knowing his attributes and a central authority is required. However, some sensitive attributes can also release the user's identity information. Hence, contemporary PPMA-ABE schemes cannot fully protect users' privacy as multiple authorities can cooperate to identifier a user by collecting and analyzing his attributes. Therefore, it remains a challenging and important work to construct a PPMA-ABE scheme where the central authority is not required and both the identifiers and the attributes are considered.",
keywords = "CP-ABE, decentralization, privacy",
author = "Jinguang Han and Willy Susilo and Yi Mu and Jianying Zhou and Au, {Man Ho Allen}",
year = "2014",
month = jan,
day = "1",
doi = "10.1007/978-3-319-11212-1_5",
language = "English",
isbn = "9783319112114",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
number = "PART 2",
pages = "73--90",
booktitle = "Computer Security, ESORICS 2014 - 19th European Symposium on Research in Computer Security, Proceedings",
address = "Germany",
edition = "PART 2",
note = "19th European Symposium on Research in Computer Security, ESORICS 2014 ; Conference date: 07-09-2014 Through 11-09-2014",
}